Microencapsulation efficiency of Zataria multiflora essential oil (ZEO) into seaweed polymer including agar, alginate and carrageenan was investigated by exploration of zeta-potential, particle size, polydispersity, viscosity and radical scavenging activity of dispersion and tensile strength, elastic modulus, elongastion at break, differential thermal analysis (DTA), thermogravimetry analysis (TGA), and atomic force microscope analysis of related foams. Append of ZEO into agar, alginate and carrageenan dispersion led to a decrease of the pH, conductivity, zeta-potential and particle size, an increase of the viscosity and antioxidant capacity of the dispersion and also a decrease of the tensile strength and elastic modulus and an increase in elongation at break and thermal stability of the foam. Such modification confirmed entrapment of ZEO in agar, alginate and carrageenan scaffold, while carrageenan is the most effective polymer. Fourier transform infrared spectroscopy (FTIR) indicated no covalent interaction between active groups of essential oil and functional groups of agar, alginate and carrageenan.

Inductrial relevance

This study clealy suggest, agar, alginate and carrageenan are promising pharmaceutical excipients for encapsulation of essential oil to increase bioavailability and reduce volatility of ZEO. ZEO also increase the functionality of agar, alginate and carrageenan to make them as a medicinal food for treatment oxidative stress or as a bioactive applicant for food packaging material.

中文翻译：

---

琼脂，藻酸盐和角叉菜胶中z杂精油的微囊化

百日草的微囊化效率通过探索zeta电位，粒度，多分散性，分散液的粘度和自由基清除活性，拉伸强度，弹性模量，断裂伸长率，差示热分析（ DTA），热重分析（TGA）和相关泡沫的原子力显微镜分析。将ZEO加入琼脂，藻酸盐和角叉菜胶分散液中会导致pH值，电导率，ζ电位和粒度降低，分散液的粘度和抗氧化能力增加，以及抗张强度和弹性模量降低。断裂伸长率的增加和泡沫的热稳定性。这样的修饰证实了ZEO被困在琼脂，藻酸盐和角叉菜胶支架中，而角叉菜胶是最有效的聚合物。傅里叶变换红外光谱（FTIR）表明，精油的活性基团与琼脂，藻酸盐和角叉菜胶的官能团之间没有共价相互作用。

工业相关性

该研究清楚地表明，琼脂，藻酸盐和角叉菜胶是用于包封精油以增加生物利用度并降低ZEO挥发性的有希望的药物赋形剂。ZEO还提高了琼脂，藻酸盐和角叉菜胶的功能性，使其成为用于治疗氧化应激的药用食品或作为食品包装材料的生物活性物质。